The 19-year-old charmer has once again put his juvenile side on full display. While hanging out with some buddies on the balcony of a hotel room in Toronto on Thursday, he was photographed launching a big glob of spit down below to the street.

Now, the "Boyfriend" singer could have hit bushes or the grass ― not a human ― with his saliva. It's unclear where it landed. But it's very interesting that on the same day, he posted an Instagram video of the scene below his hotel, where a slew of screaming girls lined the streets. And even more young women (whom he referred to as "#sexyfans") ran down the street toward the hotel when they caught wind that he was standing outside. There were definitely many people down below, as you can see here:

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When he wasn't spitting, Justin took footage of his fans down below. (Instagram)

Also, in his video, he's wearing the same outfit as the spitting photographs. And the same group of friends can be seen standing with him.

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Ew. (PacificCoastNews.com)

The whole scenario is also interesting because several people have recently accused him of spitting on them during, well, spats. There was the woman in a Ritz-Carlton gym in North Carolina last year, who said he told her to “Shut the f**k up” (when she counted her exercise reps aloud) and then deposited some of his saliva into her Gatorade. Then there was the neighbor in his Calabasas, California, gated community, who faced off with Bieber over his allegedly reckless driving, and said Bieber spit in his face during the confrontation. Most recently, a DJ in an Ohio nightclub made a similar accusation.

Of course, you'll also remember the recent footage of Bieber urinating in a mop bucket in the kitchen of a New York City nightclub. After the video (in which he also dissed former president Bill Clinton) went public, he seemed to apologize for his childish antics, saying, "In life u will make mistakes and people will try and tear u down...but u gotta stay positive. Stay strong..and learn to be better..and...always live to serve others and The Lord. #growingeveryday."